Do you feel annoyed when the battery is out of power when you are in immersive games? Don&acute;t worry， this affordable battery would help you out. Made of high quality cells， it is environment-friendly， reliable and easy to use. With high capacity and lower energy consumption， this battery enables you to play games for long time.                                    Features            Condition: new， never used beforeHigh qualityDirect replacement for the standard batteryLithium Ion Battery 3.7VHeavy Duty 850mAH                                                            Specifications            Voltage    3.7V    <br>Capacity    850 mAh    <br>Battery    Lithium Ion Battery    <br>Weight    0.81 oz / 37 g    <br>Dimensions    (2.24 x 1.3) " / 5.7 x 3.3 cm (L x W)    <br>Compatible With    Nintendo NDS DS    <br>                                                            Package Includes            1 x 3.7v 850mah Battery for NDS DS<br>